Former Marine Paul Whelan, who marked his fifth Christmas in a Russian penal colony this year, has told President Biden to “man up” and and get him home as soon as possible.

“Mr. President,” the 53-year-old told Washington, DC’s WTOP radio on Christmas Eve. “You promised to bring me home. I’m still here. There has to be more that you can do to secure my release.”

“The concern that I have,” Whelan went on, “is that diplomatic efforts have failed and not enough is being done to secure my release from the very top.”

The holiday message follows a phone interview with the BBC last week in which Whelan told the UK broadcaster that “it’s unfathomable to me that they’ve left me behind.”

“They’ve basically abandoned me here,” he added at the time.

In December 2022, Biden signed off on a deal to secure the release of WNBA star Brittney Griner from a Russian prison in exchange for setting free arms trader Viktor Bout, the so-called “Merchant of Death.” At the time, the White House maintained that Moscow was unwilling to release Whelan and promised to continue to work toward securing his freedom.

“Sadly, for totally illegitimate reasons, Russia is treating Paul’s case differently than Brittney’s,” Biden said. “And while we have not yet succeeded in securing Paul’s release, we are not giving up.”

That April, the administration had agreed to another prisoner swap, releasing Russian drug trafficking pilot Konstantin Yaroshenko in exchange for another former Marine, Trevor Reed.

In his message to WTOP, Whelan blasted Biden as “the guy that made the decision to leave me behind twice.”

“My message to him is quite simply: I’ve been told that everyone is doing all they can and that my release is a top priority,” he added. “Promises have been made, and I need everyone who has made those promises to now man up and honor them.”

Whelan was arrested Dec. 28, 2018, and charged with espionage while in Moscow for the wedding of a friend. He was sentenced in June 2020 to 16 years in prison.

Both he and the US government have strenuously denied Russia’s claims.

Whelan is currently being held at a labor camp in Russia’s Mordovia Republic, some 350 miles east of Moscow. Last month, he was attacked and injured by a fellow inmate.

The detainee claimed to WTOP that the labor camp’s deputy warden has a grudge against him after Whelan refused to cough up “$1,100 in protection money.”

“He has set up provocations to try to have me injured in retaliation for him getting in trouble,” Whelan claimed.

The US is also trying to obtain the release of Wall Street Journal reporter Evan Gershkovich, 32, who was arrested this past March in the city of Yekaterinburg over spying accusations that both his outlet and the government have denied.

In a statement to WTOP, National Security Council spokeswoman Adrienne Watson said: “There is no higher priority for President Biden than bringing home the Americans still wrongfully detained and held hostage abroad, including Paul Whelan. The President’s commitment to wrongfully detained Americans and hostages has resulted in dozens of Americans being safely returned to their loved ones, including in situations that had long appeared hopeless and those that required hard and controversial decisions.

“In the cases of Paul Whelan and Evan Gershkovich, we have made and will continue to make significant offers for them, including one earlier this month,” Watson added. “We also continue our conversations with third party countries as we work to find a way to secure their release.”

The White House did not immediately respond to a request for comment from The Post.